Lessons in Elementary Biology
Lessons in Elementary Biology
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In our eReader you can find the full English version of the book. Read Lessons in Elementary Biology Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Lessons in Elementary Biology
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Sections show that this central body is the ovum, a large cell very rich in starch : it is connected with the unicellular stalk by a small cell (nd} from which spring five spirally-arranged cells (sp. C. ) : these coil round the ovum and their free ends each divided by septa into two small cells project at the distal end of the organ and form the crown, enclosing a XXI DEVELOPMENT OF GONADS 217 narrow canal which places the distal end of the ovum in free communication with the surrounding water....
We saw how the various parts of the fully formed plant nodal, and internodal cells, leaves, and rhizoids were all formed by the modification of similar cells produced in the apical bud. It is interesting to find that the same is true of the diverse parts of the reproductive organs.
The spermary arises as a single stalked globular cell which Sf. C, FIG. 48. A, vertical section of the ovary of Nitella, showing the stalk (stk], small node (nd) from which spring the five spirally-twisted cells (sp.
What to read after Lessons in Elementary Biology?
You can find similar books in the "Read Also" column, or choose other free books by Thomas Jeffrey Parker to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Sections show that this central body is the ovum, a large cell very rich in starch : it is connected with the unicellular stalk by a small cell (nd} from which spring five spirally-arranged cells (sp. C. ) : these coil round the ovum and their free ends each divided by septa into two small cells project at the distal end of the organ and form the crown, enclosing a XXI DEVELOPMENT OF GONADS 217 narrow canal which places the distal end of the ovum in free communication with the surrounding water....
We saw how the various parts of the fully formed plant nodal, and internodal cells, leaves, and rhizoids were all formed by the modification of similar cells produced in the apical bud. It is interesting to find that the same is true of the diverse parts of the reproductive organs.
The spermary arises as a single stalked globular cell which Sf. C, FIG. 48. A, vertical section of the ovary of Nitella, showing the stalk (stk], small node (nd) from which spring the five spirally-twisted cells (sp.
What to read after Lessons in Elementary Biology?
You can find similar books in the "Read Also" column, or choose other free books by Thomas Jeffrey Parker to read onlineMoreLess
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